September weather forecastSea Isle City, NJ
September
Weather in September
September, the first month of the autumn in Sea Isle City, is also a moderately hot month, with an average temperature ranging between min 67.5°F (19.7°C) and max 73.8°F (23.2°C).Temperature
In September, the average high-temperature marginally drops from a moderately hot 79.2°F (26.2°C) in August to a still warm 73.8°F (23.2°C). September witnesses a minor deviation from daytime peaks, with an average nighttime temperature of 67.5°F (19.7°C).Humidity
In September, the average relative humidity is 77%.Rainfall
In Sea Isle City, in September, during 9.1 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. Throughout the year, in Sea Isle City, New Jersey, there are 112.7 rainfall days, and 8.94" (227mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall in Sea Isle City.Daylight
The average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:28 pm. On the last day of September, in Sea Isle City, sunrise is at 6:54 am and sunset at 6:42 pm EDT.
Sunshine
In Sea Isle City, New Jersey, the average sunshine in September is 9.5h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 5 during September translates into these guidelines:
Make use of precautions - It is urged to ward off sun damage. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sea Isle City, NJ
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in September: 67.5°F
The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (32.7°F).
Average pressure in September
Sea Isle City, NJ
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Sea Isle City, NJ
- Average wind speed in September: 10.8mph
The windiest month (with the highest average wind speed) is January (13.5mph).
The calmest months (with the lowest average wind speed) are July and August (9.1mph).
Average humidity in September
Sea Isle City, NJ
- Average humidity in September: 77%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is November (73%).
Average rainfall in September
Sea Isle City, NJ
- Average rainfall in September: 0.55"
The wettest months (with the highest rainfall) are May and June (0.98").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in September
Sea Isle City, NJ
- Average rainfall days in September: 9.1 days
The month with the highest number of rainy days is July (12.7 days).
The month with the least rainy days is November (5.9 days).
Average snowfall in September
Sea Isle City, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.24").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Sea Isle City, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Sea Isle City, NJ
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in September
Sea Isle City, NJ
- Average sunshine days in September: 18.8 days
The months with the most sunshine days are January and November (22.3 days).
The month with the least sunshine days is July (15.6 days).
Average UV index in September
Sea Isle City, NJ
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Sea Isle City, NJ
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 24).
Average visibility in September
Sea Isle City, NJ
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
